Material:b2 b3 bu Diameter:25-150mm Technology:forged steel balls/hot rolling steel balls Price:negotiable Total supply:200, 000 t Delivery date:1000 tons within 10 days Surface hardness as high as 58-65hrc Volume hardness as high as 56-64hrc Impact toughness bigger than 12j/cm2 Breakage rate much lower than 0.5%